Referee: Match Timer & Whistle

Referee: Match Timer & Whistle is a professional sports officiating companion designed for soccer, futsal, basketball, and amateur sports referees and coaches. Key Features: - Match Stopwatch & Countdown: Accurately track halves, quarters, and stoppage injury time with clear visual indicators. - Instant Electronic Whistle: Loud acoustic whistle sirens with tactical burst modes and synchronized haptic vibration pulses. - Fullscreen Disciplinary Cards: Instantly raise Yellow Card, Red Card, or Green Card with full-brightness display. - Match Event Log: Record goals, cards, and timeouts directly during match flow with offline local persistence. - Multi-Sport Presets: Quickly select between Soccer (45m/45m), Futsal (20m/20m), Basketball (10m/12m quarters), or custom periods. - 100% Offline: Zero internet required on the pitch, preserving battery throughout the tournament. Privacy Policy: https://hoanganhphan91.github.io/hoanganhphan91/